Any ideas what it might be? I have the same applications on my Mac Mini and never seen the icon.
Best Answer
I believe it is "Checking for updates" icon for LibreOffice. It goes away whenever you close it, and whenever you click the icon with LibreOffice open, it brings up the "Check for updates" dialog.
I accidentally discovered that while trying to find out what it was!
I was having the same issue with an alias on the desktop of a .pvm file. I found I could change the icon in its original folder, but when I moved it to the desktop it reverted. I tried changing the name of the alias back to its original name as noted above, and the changed icon came back, but I didn't want the long name. I tried making an alias of the alias as noted above, and that worked, but as soon as I removed the .pvm extension on the name it reverted again. Ultimately, I could change the name to anything and keep the new icon as long as the name included the .pvm extension.
This is a feature called Handoff, which is part of Continuity. It allows you to access apps running on your other devices with the aim of letting you start a task on one device and resume it on another.
On your MacBook Pro, you are seeing a copy of Chrome running on another Mac which is on the same Wi-Fi network, where Bluetooth is enabled on both devices and you are signed in to both devices using the same iCloud account.
It can be turned off by following the instructions in the article linked above.
Best Answer
I believe it is "Checking for updates" icon for LibreOffice. It goes away whenever you close it, and whenever you click the icon with LibreOffice open, it brings up the "Check for updates" dialog.
I accidentally discovered that while trying to find out what it was!